| AlPO_4包覆LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2的制备与电化学性能 |
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| 引用本文： | 梁凯,熊利芝,唐明,何则强.AlPO_4包覆LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2的制备与电化学性能[J].吉首大学学报(自然科学版),2010,31(2):89-93. |
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| 作者姓名： | 梁凯 熊利芝 唐明 何则强 |
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| 作者单位： | （1.吉首大学化学化工学院，湖南 吉首 416000；2.吉首大学生物资源与环境科学学院，湖南 吉首 416000；3.长沙理工大学化学与环境工程系，湖南 长沙 410076） |
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| 基金项目： | 国家自然科学基金，中国博士后科学基金，湖南省自然科学基金，湖南省教育厅科学研究项目，吉首大学科研项目 |
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| 摘 要： | 采用高温固相法制备LiNi1/3Co1/3Mn1/3O2,溶胶-凝胶法制备AlPO4包覆LiNi1/3Co1/3Mn1/3O2材料(AlPO4-coated LiNi1/3Co1/3Mn1/3O2).并用XRD、SEM检测等对材料进行了表征,用X-射线衍射、扫描电镜分析以及电化学测试等手段对样品的微观结构、表面形貌和电化学性能进行了研究.结果表明:在AlPO4-coated LiNi1/3Co1/3Mn1/3O2中,AlPO4以无定形态包覆于的表面;AlPO4的存在,阻止了电极与电解质溶液之间的副反应,降低了电极的表面膜阻抗和电荷转移阻抗,加快了锂离子的扩散速度,使得LiNi1/3Co1/3Mn1/3O2的循环性能和倍率性能显著改善.
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| 关 键 词： | LiNi1/3Co1/3Mn1/3O2 磷酸铝 包覆 |
Preparation and Electrochemical Properties of AlPO4-Coated LiNi1/3 Co1/3 Mn1/3O2 |
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| LIANG Kai,XIONG Li-Zhi,TANG Ming,HE Ze-Qiang.Preparation and Electrochemical Properties of AlPO4-Coated LiNi1/3 Co1/3 Mn1/3O2[J].Journal of Jishou University(Natural Science Edition),2010,31(2):89-93. |
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| Authors: | LIANG Kai XIONG Li-Zhi TANG Ming HE Ze-Qiang |
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| Institution: | （1.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China;2.College of Biology Resource and Environmental Sciences,Jishou University,Jishou 416000,Hunan China;3.School of Chemistry and Biological Engineering,Changsha University of Science and Technology,Changsha 410076,China) |
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| Abstract: | LiNi1/3Co1/3Mn1/3O2 was synthesized by high temperature solid state method,and AlPO4-coated LiNi1/3Co1/3Mn1/3O2 was prepared by sol-gel using LiNi1/3Co1/3Mn1/3O2,Al(NO3)3·9H2O and H3PO4 as raw material.The microstructure,surface morphology and electrochemical properties were characterized by various electrochemical methods in combination with X-ray diffraction(XRD) and scanning electron microscope(SEM).Results show that amorphous AlPO4 is coated on the surface in AlPO4-coated LiNi1/3Co1/3Mn1/3O2.AlPO4 can m... |
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| Keywords: | LiNi1/3CO1/3Mn1/3O2 |
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